"A Child of Frenzy." Her expression turned solemn as she marked the presence of every Frenzy Beast in the Labyrinth of Frenzy, planning to search each one of them. Seeing the body of the Tier 1 Frenzy Beast in her hold turn yellow, Madam Rizenne whispered, "I can handle them, Mila."
"Better to be safe than sorry," A voice echoed back, the yellowing Frenzy Beast becoming a rigid marble statue. "Besides, we cannot be sure if he hasn't directed his gaze here through it."
A Child of Frenzy was a Frenzy Beast born with a Frenzy Parasite. It was a result when its parents had some of the Wisdom Parasite in them shed during the copulation process, fusing with the foetus that later formed.
The Frenzy Parasites were a product of Rhachis Ancestor Parasite, leading to him gaining absolute control over every Child of Frenzy the moment they are born. Should he chose to deepen his control over them, they would become no different than his puppet.